Exactly, but it will never be zero. There will always be scammers trying to get rich quick on the trust users have placed in the (more) honest scammers. All organized crime has to deal with some amount of posers trying to cash in on their reputation.

Sometimes the way they keep the dishonest guys in line is by attacking others who try to get in on the scheme. Traditionally this would be breaking people's knees, and I imagine well-organized cyber crime boils down to the same thing in the end.